I have this issue with contextual filter. I have set the filter so it would get an ID of an article and based on that ID, it would show the name of the author. The problem is, it doesnt work with URL aliases. For example, when I put the ID of the node like example.com/node/22, it finds the author. But when I try to put the URL alias like example.com/clanky/something-something-something, it doesnt show anything. Any idea how can I solve this? Thank you for any reply.